Which Cisco Small Business router features a 4-port Fast Ethernet integrated switch but not wireless capabilities？（）

A. Employees can receive calls at their desk and cell phone simultaneously.
B. Customers can call one number to reach all employees.
C. Employees can have their calls forwarded to the receptionist.
D. Customers can call any office number and the receptionist receives the call.

A. 3x
B. 5x
C. 10x
D. 2x

A. CE520
B. 520-T1 SR
C. ASA5505
D. UC520